h2 {
    margin: 0;
    padding: 0;
    font-size: 100%;
    font-weight: normal;
  }
  ul {
    margin: 0;
    padding: 0;
    list-style: none;
  }
  
  .menu-container {
    width: 200px;
    margin: 0 auto;
    line-height: 30px;
  }
  
  .menu-container h2 {
    padding: 0 25px;
    cursor: pointer;
    background: lightblue;
  }
  
  .submenu {
    background: #e0f0f7;
    padding: 0 30px;
    height: 0;
    overflow: hidden;
  }
  .menu {
    margin: 20px 0;
  }
  
  .submenu li {
    height: 30px;
  }
  